Tire-rim.



B. RQUHART. T IREBIM.

APPLIGATIONVFILBD APR.5. 1:1114

` 1,133,683. Patented Mar. 30, 1915.

' 'BENJAMIN' URQUHART, OF PLAINFIELD, NEW JERSEY.

TIRE-RIM.

. Rims; and I do hereby declare the vfollowing to be a full, clear, and exact description of the invention, such as will enable others skilled inthe art to which it appertains to .make and use the same.

This invention contemplates an improved de mountable tire rim, especially'adapted for the wheels ofantomobiles. It is custom` ary to make these rims in two parts or of a single split ring, the object being to permit of a partial collapse of the rim when re-l moved from the wheel so as to reduce its circumference and thereby enable the shoe ior tire, to be slipped over the rim, after which the latter is snapped back into its ciicular form 'with its edges abutting.

The difficulties attending the use of .the present forms of detachable rims are well known to the operators of motor vehicles. According to one form the rim is made of two rigid semi-circular parts, hinged together at diametrica-lly opposite points of the circular structure, the sections collapsing so that one extremity of one section moves outside of the other section, its other extremity moving inside said other section. The structure thus assumes .a substantially oval shape and the shoe or tire has to be bent into the same shape before it can/kbe slipped over theends of the sections. Furthermore vby the described construction there is no `material le'ssening of thesize of the rim vsince the two rigid sections merely break ljoint and move out of register, and the ex1 tent to which the periphery is reduced. at the point where the extremity of a section turns inward is counterbalanced at the opposite point where its other extremity moves outward.

My invention is illustrated in the accompanying drawing, Figure l. being a side ele* vation of the rim when set up and Fig. 2 showing it collapsed.

Referring tothe drawing I have shown specificati@ of Letters raient.

have invented certain' Patented Mar. 3ft, i915.

Application tiled April-5, 1511.` Serial No. 619,15@

the lrim consisting'of two sections, l, 2, each substantially of semi-circular formation. Vhen these sections are joined together with their edges abutting they comprisethe coinplete rim of circular formation. The section' 2 has its extremities hinged to the extremities of section 1 as at 3 and Je and the leaves of the hinges to which section f2v is secured turn inward shewn, the pivots of said hinges being inset from the extremities ofthe section l. I make the sectionV 2 in two parts hinged together as at 5, thus rendering that section pai-tially collapsibie itself and permitting its-extremities to readily bend inward. In their collapsed position the extremities of the two-part section overlap the extremities of the section l.

It will be apparent that the rim may be readily collapsed and without dilliculty as there is no resistance to overcome and that in its collapsed form its circnmference is so materially reduced that the shoe or tire may be placed over it without having to be bent or forced on at all.

It will be understood that the rim is snitably channeled or otherwise formed to rfceive the tire and that the rim in tiirn is to be secured by suitable means to the wheel, but as these form no part of this invention they are not shown or described. Y

A demountable tire rim having two sections, one section being composed of two parts pi'voted together to fold toward each other, the extremities of said parts being connected to the other section each by a three-part hinge, the pivots of'said hinges being inset from the ends of said last mentioned section to permit the extremities of the twopai't section to fold within the extremities of the other section.

In testimony whereof, I have signed this specification in thepresence of two subscribing witnesses.

l EDWARD URQUHART, ASA F. RANDOLPH. 

